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首页> 外文期刊>IEEE / ASME Transactions on Mechatronics >Reliability by Robust Design for optical alignment in a CD pickup
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Reliability by Robust Design for optical alignment in a CD pickup

机译：通过稳健设计实现CD拾音器光学对准的可靠性

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摘要

Micron-level alignment of optical components in the laser pickup of a compact disc (CD) system is critical for its performance. The robustness of the rotational alignment of the laser/diffraction grating unit (LDGU) is studied in detail using finite element analysis and Robust Design tools. Robust design simulations were constructed in terms of the process capability indices C/sub p/, C/sub pk/, and yield of the clamping arms used to hold the LDGU in place. Effects of force and torsional load from the actual process were taken into consideration during the simulations. Experimental measurement was used to verify the finite element analysis. The results from both experimental and theoretical analyzes were applied to concurrently modify the design of the clamping arms, reducing the fall-off rate in the production of the laser pickup by 10%. It is demonstrated that the finite element analysis together with the Robust Design approach form a very powerful tool for the designer to achieve the required reliability targets for the product.
机译：光盘（CD）系统的激光头中光学组件的微米级对准对于其性能至关重要。使用有限元分析和鲁棒设计工具详细研究了激光/衍射光栅单元（LDGU）旋转对准的鲁棒性。根据工艺能力指数C / sub p /，C / sub pk /和用于将LDGU固定在适当位置的夹紧臂的屈服强度，构建了可靠的设计仿真。模拟过程中考虑了实际过程中的力和扭转载荷的影响。实验测量用于验证有限元分析。来自实验和理论分析的结果均被用于同时修改夹持臂的设计，从而将激光头生产中的脱落率降低了10％。结果表明，有限元分析与稳健设计方法共同构成了一个非常强大的工具，可帮助设计人员实现产品所需的可靠性目标。

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